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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"`test.test_math.MathTests.testAtan2` failure on OpenIndiana/Solaris","articleBody":"I do see the following failure with Python-3.14.0rc2 on OpenIndiana.  This is a regression from Python-3.13.7.\n\n```\n======================================================================\nERROR: testAtan2 (test.test_math.MathTests.testAtan2)\n----------------------------------------------------------------------\nTraceback (most recent call last):\n  File \"/data/builds/ul-workspace/components/python/python-314/Python-3.14.0rc2/Lib/test/test_math.py\", line 339, in testAtan2\n    self.ftest('atan2(0., -0.)', math.atan2(0., -0.), math.pi)\n                                 ~~~~~~~~~~^^^^^^^^^\nValueError: math domain error\n\n----------------------------------------------------------------------\n```\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-138812\n* gh-146402\n* gh-146438\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/mtelka","@type":"Person","name":"mtelka"},"datePublished":"2025-09-06T06:39:18.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":32},"url":"https://github.com/138573/cpython/issues/138573"}